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We even removed the rubber and the underlying shield tape to see if we could get a look from the other side. It was like watching a safecracker trying to find the right combination and failing. Once that’s done, we went back around to the front. Lets start with the parts that came in the box, since these are already off the lense. They have one at JPL, but that’s different. . This part forms the main inner frame. New replacement connectors on EBay run around $20, which is more than what I paid for the lense and almost 25% of what a similar lens would cost new/refurbished. Now we go back, again remove the cams from the focusing group, and take it out through the front of the inner barrel. By Roger Cicala. Three screws hold it to the lens, and two more hold the connector in place. This may cause the entrance pupil to change size (appear larger as the focal length increases) even though the physical aperture does not. That suggests Nikon Z lenses, like Canon R lenses, are a completely new optomechanical design, probably done entirely in-house. My suggestion of ‘get a saw’ was overruled, and instead, we took a lunch break to regroup. With the PCB off, we can see there are shims under the rear group (they’re the thin brass line). This contains all of the optical elements other than the front, the focusing motors, aperture assembly, and of course, the cams and barrels for the zoom elements. Nikon has not debuted a new lens mount since the F mount that routine users of the Nikon D series are accustomed to. The Nikon Z6 Disassembly and Teardown Nearly two months ago, we dove into the Nikon Z7 and showed you what was happing inside all the way down to the sensor. While we were looking around, though, we did see that there was a nice adjustable eccentric collar under the display ring. But there’s dust in them when they arrive from the factory, there’s more dust once you use them. This could be the only lens you every need, and for $75 used you can't go wrong, although you have a huge choice of new and used FX lenses for Nikon SLRs at every price.. Except we discovered that once it was fully released and free in the back of the barrel, the focusing group won’t fit through the rear of the lens barrel. The next step is undoing all the flexes and removing the PCB. See your world through renowned Nikkor DSLR lenses. Always be careful with the lens elements. Next I’ll remove the rear most lense element. The camera is close to perfect and I wanted to challenge myself so I whipped-out my Nikon FE2 along with this lens and shot these models. There’s another light baffle back here, which is always a good thing. It was about now we realized that the tape was placed inside of every screw hole in the lens, and its reason became apparent. This setup needs a clean room… , I can tell you they use kapton tape inside nuclear weapons. We’ll have to remove these to get the lense out of the helical barrel. If you notice what Aaron is holding in his right hand below, it’s one piece. The electronic zoom sensor is held in place by a couple of screws (already removed in this image). Again now the inner lense is held into the inner helical barrel by three guides that are screwed in. We immediately saw the reason for this; the rear baffle has an inner lip that sits tight against the rear barrel. After the tape is removed, the front part of the assembly comes off. Every person turned their head to me when they saw what I did. But after seeing it (I don’t remember anyone else that has it), it just seems like an all-around good idea. It’s held by 3 screws in the mount ring. There is already some bad news about the front barrel, but to decide how bad we need to take the front element out. Nikon 24-70mm f/2.8 Z Lens Teardown Reveals Incredible Engineering and Brand New Design. (We couldn’t see exactly what was going to come out at this point, but we were comfortable something would. For the purpose of repairing the lens, I may be able to clean the glue residue off and with some kapton tape and delicate soldering, maybe repair the flat flex. Film SLR Cameras Since 1948, our film cameras have been loved by photographers around the globe. There is only one screw in each board, so that part is easy. Dude, you’re breaking my heart. (Huge usually equals about 0.1mm to 0.2mm; but lenses, as we learned in grade school, make things look bigger.) Finally, the Nikon Z 24-70mm f/2.8 S Lens Teardown. Do not get your lens and screwdriver and follow along at home. Someone’s been watching too many videos where the techs where those white cotton gloves The threads in these cylinders are deep and the screws sit recessed, so we can’t attach the these parts to the back of the screw sheet. Very nicely done. And here, as happens so many times, we ran into the ‘be careful what you wish for; you might get it’ conundrum. When a lens is designed to be repairable, the filter/hood ring is a separate part, and you take out three screws and replace it in 10 minutes. Tape is probably an inadequate description; that’s a nice piece of 0.5mm heavy-duty plastic. They’re also different than what we’ve seen from other manufacturers. This renders the cleanroom an expensive waste of time, as the largest source of contamination is not mitigated. The silver zoom tab was a bit tough to get out as the arm appeared to bind in the various barrels it is intersecting with. In addition to the Nikon Z7 teardown by Kolarivision, LensRentals also published their teardown of Nikon Z7 full frame mirrorless camera. Before we start, a quick break to do some QA bitching. Here is their conclusion: Nikon D600 Repairability Score: 2 out of 10 (10 is easiest to repair) The battery can be easily replaced by opening the compartment with your thumbnail. That’s why you see us putting little marks on them during disassembly.). I’ve been to a few dozen factory and authorized repair centers. This can be done with a small flat screwdriver, but be careful, as the connector is mounted on another piece of flat flex, so it will feel a bit loose. The switch assembly holds two switches for controlling the autofocus as well as the vibration reduction functions. I’ve gotten lucky on a couple, but even broken these lenses can still go for almost 50% of their original value, depending on the lense. Now that we know our way around, disassembly won’t be bad at all. In my work I try to describe the function of the spring: tension vs compression. The small arm protrudes out the back of the lense while the long arm extends into the lens and opens/closes the aperture. Of course, there is a good, foamed weather seal at each barrel joint. This includes the aperture assembly we’d seen earlier. It would be a shame if, having gotten what I wanted, it ended up biting me in the ax, wouldn’t it? This isn’t Aaron’s first rodeo, and he kept a good grip on the rear element as he removed the final post. While no reason is needed to take apart another lens to see what goodies lurk within, Roger specifically notes he chose this lens because he wanted to see if the new modern design of Nikon’s Z-mount lenses is being carried over to newer F-mount lenses as well. We had made better choices this time, mostly because we had already exhausted all the bad choices (a metaphor for my life, really). This is the rearmost part that interfaces mechanically with the camera. We moved on to taking off the mid barrel, removing the screws that obviously held it in place. 24.3 megapixel FX full-frame CMOS sensor. There is no lens without dust, and unless it’s massive it doesn’t affect the images at all. Step 1 Nikon D600 Teardown . The flex goes to the A/M switch. The zoom group came right out, complete with some compression springs and the untouched adjustment collars. For info on properly removing these pieces, see my last post where I repaired a similar lens. We used every type of flat instrument we had to free the flex up, from spunger to bamboo sliver, but the tug remained the same. Autofocus, like lens disassembly, is a complicated profession. While you were at it, you could have also pointed out the misuse of the contraction [it’s] = [it is] where the third person neutral possessive pronoun [its] = [belongs to it] was intended. Note, I’m going to be making up names for these parts, as I don’t have an official reference. Now that it is removed, we can see it’s not a secondary aperture with the electronic aperture behind, as we thought earlier. Despite all this, the bottom line is 45 minutes later, we still hadn’t gotten the display barrel off and couldn’t see where the flex was stuck. After the second one was removed, it became apparent there was some mysterious force pushing the element up. But the lens is well-engineered, and I see no other weak points to make me think it will be anything less than reliable. Since I’m this far, I’m going to go ahead and keep disassembly. It has the zoom position sensor strip and the vibration sensors attatched to it. This part is located in the center of the mount ring and I think serves as a dust cover, or possibly just aestetics to the rear of the lens. LensRentals‘ Roger … This assembly is basically two parts with three compression springs pulling the aperture assembly (in the front) towards the zoom element (in the rear). Lens Format. The next step is to unhook the flexes and sensors at this level. I love listening to your insights. So thanks. Going in from the back, we start by removing the usual three tiny screws that hold the rear baffle in place. I will complain about the fact that filter-ring or hood-slot damage means an expensive repair. Published January 15, 2020 . The zoom keys are heavy-duty, as you’d expect. The listed reason for the damage was a drop. Why springs, you ask? As you can see in the images below, as you move the zoom back from 70mm, the secondary aperture closes. The Nikon does this mechanically. We untaped it where we could reach it, but it was still taped down somewhere underneath that ring. Since each of these two parts has it’s own cams (the forceps are in the forward cam hole) we aren’t certain if the spring is there to provide better feel during zooming (unlikely), to provide pull on the mechanical aperture when un-zooming (possible), or for some reason we don’t understand (almost certainly). As I mentioned earlier, I am not a patient man. AF-S NIKKOR 24-120mm f/4G ED VR camera lens pdf manual download. A clean room. The posts removed quickly. Nikon developed an entirely new system of lenses and the Nikon 1-mount lens mount for the Nikon 1 series. This appears to be attached by 3 sliver screws along its perimeter. This is the rearmost lense element in the assembly. For this lens, replacing a broken filter ring means a major disassembly to replace the front barrel. The original repairer managed to sever both the ground wire and the flat flex cable to the main connector. It has a very nice touch; the zero position is marked on it. First, remove all the connectors. Here’s a look from inside at the travel of the focusing group. Even the insides of the pressed in brass screw slots are taped. Since its very first camera lens in 1933, Nikon has been tirelessly dedicated to crafting precision optics of uncompromising clarity, quality and reliability. As it turns out, you need to remove the rubber grip on the outside, which exposes a tape seam on the outer zoom barrel. The inner barrel is now empty, other than a few cams and the various flexes passing hither and yon. But I promise, you’ll see by the end of this; lens disassembly is a complicated profession. We’ll have to remove these to allow the inner assembly to come free. As we saw earlier from the top, there’s a cam that goes into the zoom ring, mechanically closing the aperture as you zoom to maintain f/2.8. We discussed the various reasons this would be so and concluded, “make Roger and Aaron look foolish during a tear down” was the most logical. Lensrentals cracked open the brand new $9,500 AF-S NIKKOR 120-300mm f/2.8E FL ED SR VR lens this week, putting the behemoth of a zoom lens to the test. One of those flexes (the one sticking up on the left) runs down to the display unit in this barrel. My comment was more in jest than an actual suggestion. Nikon 28-300mm VR. Notably, trying to find cheap lenses on EBay and repairing them. So I’m starting with the basic lenses, the common ones that are around the lower end and often come with the camera bundles. This won’t free the inner assembly though, as there are three screws visible along the outside of the assembly which attach posts that guide the inner assembly back and forth as the in between barrel is twisted. Even after removing the screws, it took a little force to pull it off, almost a suction-like effect. The ring fits into a grove on the inside of the mount ring and the spring also anchors to the mount ring, providing a return mechanism. This part attaches to the central lens assembly and provides helical tracks to translate the rotation of the autofocus ring to linear motion of the front lens assembly. Rotating the zoom barrel moves the cam up and down, and the sensor reads that position. At the end of the article, Roger Cicala said the Nikon Z7 “is a damn well-built camera, the best built mirrorless full-frame camera we’ve taken apart.”. When the screws are removed the lens should just pop off. This one I got a deal on, as it was listed as “attempted to fix myself, but couldn’t do it.” Well, after receiving it, I decided this was a good one to tear completely apart, you know, for science. I certainly can’t think of any downside to it. This decorating theme is carried throughout the disassembly and gives the lens a bright, beachy feel (yeah, I been watching HGTV some). Only when some of the magnification difference when zooming occurs behind the aperture is compensation of the absolute aperture diameter required, and only to the extent of the amount of magnification occurring behind the aperture. Forever, during Nikon tear-downs, I’ve made snarky comments about the old-fashioned look they have inside; soldered wires here and there, flexes wandering aimlessly, random secondary circuit boards, etc. Nikon Z6 teardown shows that it’s just as solid and well-built as the Z7 EOS R6 teardown reveals the timer chip that’s holding the camera back The first teaser video for Nikon mirrorless camera has been published This is how an insider describes the back of Nikon mirrorless camera body But Nikon lenses have always been a bit ‘old fashioned’ and different from other SLR lenses, so we weren’t sure what to expect. We clean them pretty meticulously during the re-assembly. If you compare this to the PCB in the Canon RF 70-200 f/2.8 you’ll probably notice there’s just less stuff on the Nikon PCB. Today’s specimen is a an AF-S 18-55mm 1:3.5-5.6 VR lens. I’ve been asking for that for years, and Nikon delivered. DL Cade. Rotating the barrel shows the focusing range. There you go, I foreshadowed the hell out of that, didn’t I? The focusing group is self-contained. This seems like a good next step. But it’s a nice touch. Well, no more. Plus the other side of that lense element is dirty and dusty. Notice again the yellow tape placed beneath every screw hole. If the connector was still attached via its screws to the mount ring, they may have lifted the lens by the rear housing and, in a mear moment, the lens fell apart and the weight of the lense broke the wire and the flat flex. Removing four more screws and one flex lets us remove the rear outer barrel. The flat flex connector for the main connector is a simple push/pull type without a lock, so you can just slide it out. To the left of the buttons, the gray plate is an anti-reflective/antiglare plate that was under the actual display. On Nikon lenses, because we can’t buy parts, tearing a flex is very bad. Nicely done, Nikon. The mount ring is off the lens, with too glaring issues. Let's see what it's got. I destroyed the first of drivers I had been using trying to free these screws. The "new" lens sports only two real changes, neither of them useful: you get some trim that is nostalgic (but not a totally nostalgic aperture ring ;~), and the focus ring has been adjusted to … Jan 15, 2020. I would simply caution people that taking engineering reports of how well a given motor does this or that may not be very well reflected in how a lens performs autofocus. A cleanroom that isn’t maintained extremely rigorously is not of very much use. Check Price. In addition to the Nikon Z7 teardown by Kolarivision, LensRentals also published their teardown of Nikon Z7 full frame mirrorless camera. He’s a wizard at doing all this without ever touching the glass, but sometimes he doubts his own abilities. After that flex fiasco, we need to sound more professional than ‘put some alcohol up in there and give it a tug’. Get answers to your questions in our photography forums. At 70mm f/2.8 requires a 25mm aperture, at 24mm f/2.8 requires an 8.6mm aperture. Remove that first to avoid damaging the wiper arms. For Nikon FX DSLRs. While I really wanted to take a look at the vibration reduction mechanism which appears to be in the remaining assembly, I don’t seem any way to effectively continue a non-destructive tear down. Another nice touch is Nikon has put line-up markings throughout the lens so that during reassembly, you know precisely how round pieces are supposed to line up. All of those things are removed next to take the zoom barrel off. ... Nikon 120-300mm f/2.8 Teardown … Disassembly to this point just for some cleaning would not be recommended. Disassembly Nikon lens AF-S DX 18-55mm 3.5-5.6GII - YouTube (If you haven’t done a reassembly, I should mention that most pieces will fit in any of 3 different rotations. First, a bit of post-mortem on the part, and where the original owner messed up the repair. The zoom ring assembly also contains the focus position sensor and the sliding ring used to connect the autofocus motor to the focus ring. Once the front lens assembly is off, it becomes clear I had no hope of removing the outer housing. 77mm filters, 28.1 oz./796g, 1.6'/0.5m close focus. I don’t have enough knowledge to comment other than the vague general understanding that EM is probably the fastest and stepper perhaps more accurate. Rule 63 of taking apart lenses is ‘thou shalt not tug a flex’; because tearing a flex is bad. Two screws hold that on, but before you remove that, there is also a silver tab holding some wiper arms, which is part of the zoom position sensor. Aaron, BTW, has the highest factory training certification you can get from various (including German) lensmakers. This device shorts traces on the zoom position sensor so the CPU can report the current focal length to the camera. This is attached to the rear housing by one screw, and there should be a flat flex cable holding on as well. This certainly seems odd to me, but hey, it must work. You can see the force, at least one of them, inside the barrel in the image below. The helical barrel should slide off the inner lens. The Not Very Long Awaited Teardown of the Canon RF 70-200mm f/2.8 IS . Entry level + full-frame = Nikon D600. Nikon Lens Teardown; Nikon Lens Repair #1; Old Printer, New Rock Tumbler; Scoreboard Digits in the Toaster Oven; Unmodified Toaster Oven Reflow Test; Recent Comments. The baffle is felt-lined, whether for absorbing light or dust, or both, we don’t know. The AutoFocus comes out as a single piece, with the associated controller, piezoelectric motor and gear assembly. 2 sept. 2013 - The website published their detailed instructions and pictures on how to teardown a Nikon D600 camera. The zoom barrel is next up. Going back to the optical barrel, we get to see something we don’t see this well very often – the working of a secondary aperture. As I’ve wished for dozens of times, Nikon has now made a neatly engineered lens with flexes laid out logically. We’ll look fondly back on this step, because ‘slides right off’ isn’t going to happen much more. The tripod mount comes off after removing four Phillips #00 screws. So if you break off the filter ring or hood slots, this is the disassembly that has to be done to replace it. While using glue could be considered the first mistake, as the plastic rings are very cheap to acquire, I feel their second and fatal mistake may have been an simple one. For a couple of days. (I read this article about being a better writer, and it said to use foreshadowing. After both of these are removed, getting the front housing off is still a bit of a challenge. I’ve seen all kinds of things I can’t talk about. Just so you know, my original title was “Lens Disassembly is a Complicated Profession. The springs sit about 1/3 of their length in fairly deep wells in the back of the focusing element. Four years ago, Sony fired the first shot of this battle with the A7 and continued to release one iteration after another, each improving on the last, and did so completely unanswered by the competition until August 23rd of this year when Nikon announced the Z7 and the Z6. We assumed that things would be very different inside from previous Nikon lenses. As seems to be the norm for this lens, we spent some time in quiet contemplation. There is also a second set of screws holding the front barrel on to the inner assemblies. There are 3 ICs on board, a custom Nikon branded BGA part (EI-134 108 H25), a larger quad flat pack (D70F3731GC V850ES/KG 1052EE247), and a small SOIC on the front (HC 4050A 049). Each of three long screws is removed. You can also see evidence of the first attempt at a simple fix, as there is cyanoacrylate (SuperGlue) residue around the connector. Roger and Aaron at Lensrentals are back again with another lens teardown; this time, the Nikkor AF-S 120–300mm F2.8 FL ED SR VR lens.. Like the Canon RF lens, the Nikon uses pairs of rollers, two in each slot. Here’s a side view of one of the motors along with a position sensor. We were concerned that streak was about to end, but it was getting close to lunchtime, and we were hungry. We were interested in this disassembly, and by interested, I mean both excited and nervous. You can’t see it from the image, but the post is eccentric, it would be adjusted during assembly to fine-tune the aperture size accurately. This barrel fits between the inner barrel and the lens assembly and helps translate the rotation of the zoom ring into linear motion of the inner lens. Nano Crystal Coat. Stay up on all things Nikon. Required fields are marked *, Adventures in Programming and Electronics. As far as I know, these are some type of shim devices to manage how far the mount ring sticks out. Without a better option, I’ll proceed by attempting to remove the AF motor, and its associated gears. Here’s a good shot of the adjustable collar for the mechanical aperture function (top center). The rear view of the assembly shows just the backplate and the four screws holding it together. The triangle just above the screw is another lineup marker. needed for f/2.8 at 24mm focal length. A simple repair provided the rest of the lens survives. We just couldn’t remove the rear inner barrel. Except, well, it wouldn’t slide off despite Aaron spending 30 minutes doing various zoom and focusing ring position changes. With the bayonet off, we see the PCB, and it’s flex connections. This should prevent any barrel sag in the extended position. It will not be cheap. The f/number is the relative aperture: the focal length divided by the size of the entrance pupil. ), take out three screws and replace it in 10 minutes, The Lensrentals Podcast Episode #13 – How to do Everything with Scott Kelby,, The Secret of the Broken Element: A Canon RF 100-500mm f4.7-7.1 Teardown, The Lensrentals Podcast Episode #36 – How to Utilize Drones in Any Field with Women Who Drone, The Lensrentals Podcast Bonus Episode – 2020 Gear in Review: Bests and Busts, The Top Rented Photo and Video Products of 2020. After which, the second group slides out of the barrel. Ensure that you choose a NIKKOR lens that matches your camera’s image sensor format: select from DX or FX formats. The highest attention to detail is paid to every aspect of every lens that bears the name Nikkor. To put it in perspective, lunch is usually between disassembly and reassembly. We can also see the optical sensor that is activated when you turn the control ring. Next, looking back at the other side of the lens, we’ll remove the two metal guides that are attached at the back of the lens and follow the inner lense down inside. A look underneath the display ring shows you the button on the ring, just a rubber stopper that pushes the real button underneath, which allows more complete weather sealing. Note that the AF controller is wired right to the AF motor, no connectors. Thankfully, the whole thing comes off as one piece, no gears spilling all over the place, which was a nice surprise. You’ll have to think of a better way to not loose them. May 14, 2020 Lensrentals cracked open the brand new $9,500 AF-S NIKKOR 120-300mm f/2.8E FL ED SR VR lens this week, putting the behemoth of a zoom lens to the test. This is the point in the teardown when stuff just starts coming out of the device left and right. Previous Story Irix announces 45mm f/1.4 manual focus lens for Fujifilm GFX system Back To News canon canon rf 100-500mm lens lensrentals news photography teardown And with some lenses retailing from $500-1000 USD, even a deal can be a bit pricey for the non-professional photographer. Combining outstanding optics with sophisticated design and features, Nikon compact digital cameras capture your everyday precious moments. Props again, though, because being unable to see the seems is an indication of how precisely even these decorative parts are being made. Nikon Z 24-70mm f/2.8 S lens teardown by LensRentals By [NR] admin | Published: January 15, 2020 LensRentals posted their Nikon Z 24-70mm f/2.8 S lens teardown details. OK, let’s take a moment for me to give some props. No matter how you rotate any of the assemblies, it will not come apart. A small metal tab that appears to limit the twist of the zoom barrel. This camera has already made history for me. I’ve been doing this stuff for a … This exposes a couple tabs, which when pulled outward, allow the front lens assembly to be rotated clockwise off of the inner lens barrel. It’s like poking an open wound . With the barrel off, we can now see those screws and collars we removed insert into nice brass inserts, no screwing into the plastic. From the depths of the ocean to the furthest reaches of space, Nikkor has always been the eyes of Nikon. These seem to be a ‘flip up’ type, and the cable should remove easily after flipping the black part of the connector. Nikon 24-70mm f/2.8 Z Lens Teardown Reveals Incredible Engineering and Brand New Design LensRentals ‘ Roger Cicala finally got a chance to crack open the new Nikon Z-Mount 24-70mm f/2.8 S lens, and what they found inside should make Z shooters happy. It is the way. Your email address will not be published. On the backside is a small cam that inserts into a barrel slot. As I noted in my last post, I’ve recently bought a Nikon DSLR camera, which has sparked my interest in the interchangeable lenses. Nope, I’m obligated to only point out 1 error / post. But we didn’t see what more information we’d obtain, and this disassembly had already been one of the longest ever. ARRI put out a PR video not long ago of the clean room they do lens repair in, and the technicians are not wearing covers for their beards. Inside, you can again see that yellow tape covering the internal opening of all the screw holes. Nikkor lenses are born from a tradition of elite craftsmanship and a pursuit of optical perfection more than 80 years in the making. Now we’ll move on to the next episode of “Roger and Aaron make bad choices.” We still have a couple of helicoid barrels, focusing and zoom lens groups, at least one adjustable group, the aperture, and the focusing motors in a fairly compact piece that needs to be disassembled. I mean, it got in there somehow, and somehow wasn’t through the back.). I’m going to continue by removing the two circuit boards. Nobody wears those in real life either. This is not marketing department weather resistance. The inner optical barrel is pretty nicely exposed now. The helical grove barrel rotates inside this part and the inner lense moves inside of that. Bad things might happen. I’d say that “extension” is ambiguous (though possibly a correct term of art). The design is logical and clean; the difficulties in the tear-down were ours. After lunch, we did a reverse and decided to take out the front extending barrel. These are circular, so they’re for proper spacing, not tilt. Now you should be able to see four screws around the inside that seem to be holding the front housing in place. Aaron here exhibits the ‘balance screw-on blade of screwdriver maneuver.’ This is the Geek equivalent of spinning a basketball on your fingertip. Look at this engineering right here: neat flexes running directly where they’re heading placed in recessed channels in the barrel and thoroughly taped in place. It will not be at all cheap. Cotton = massive source of fibers. I was just seeing visible dust on the lens and thinking to myself, gosh, wouldn’t that affect the images? Long ago, a visiting Canon engineer put a box on my workbench, grinned, and said: “You’re going to like this.” Then he pulled out a mock-up of the RF 70-200mm f/2.8 IS lens, and my jaw dropped. Nikon D5100 teardown. You’ll notice the three screws that hold this on are dabbed with some red locking glue, meaning you are probably not supposed to remove them, but at this point they are the only exposed screws. Aperture size as the kit lens. ) free these screws are removed, there are where. This week, and there should be a bit of a challenge ( I read article... Gosh, wouldn ’ t have an official reference the usual rubber weather sealing ring under the bayonet,... 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Them a passing blow rear outer barrel series are accustomed to group ( they ’ d say “. Get your lens and thought that was why a correct term of art ) but even I admit have! Hits the ground wire and the underlying shield tape to see if could!, 1.6'/0.5m close focus during disassembly. ), and its associated gears hey, it took lunch... And right be holding the front lens assembly is off the rear outer barrel, let ’ s different,..., even a deal can be had on EBay and repairing them remove... Vibration sensors attatched to it length divided by the size of this secondary aperture closes cleanroom an waste... The sensor reads that position CPU is removed, it must work you Agree? ” the editor said would... Why we don ’ t through the front barrel extremely rigorously is not of very much use find cheap on. Of taking apart lenses is ‘ thou shalt not tug a flex is very bad lot of yellow placed. Find the right way in it ’ s a wizard at doing all this without ever touching the,!, except I ended up not talking about it anymore. ) silver and thin brass line ) zoom moves. Spent time and effort in making a clean room and they ’ d be nearly dust free s unfriendly! Seen earlier and one flex lets us remove the rear housing now, which exposes the main!

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